diff --git a/cpp/CHANGELOG.md b/cpp/CHANGELOG.md
index bf801c1c35..2080fec550 100644
--- a/cpp/CHANGELOG.md
+++ b/cpp/CHANGELOG.md
@@ -13,3 +13,4 @@ Please mark all change in change log and use the ticket from JIRA.
 ### Task
 
 - MS-1 - Add CHANGELOG.md
+- MS-4 - Refactor the vecwise_engine code structure
\ No newline at end of file